BD53E42G-MTR

Overview

The BD53E42G-MTR is a single-channel voltage detector manufactured by Rohm Semiconductor, designed for automotive applications. It features a detection threshold of 4.2V with ±1% precision and an adjustable reset delay timer controlled by an external capacitor. The device operates within a supply voltage range of 0.95V to 10V and supports a low active reset state. It utilizes a CMOS output type and consumes 0.85µA in both ON and OFF states at VDET=4.8V. The component is housed in a 5-SSOP package, certified to AEC-Q100 standards, and functions across a temperature range of -40°C to 105°C.

Feature Summary

• Adjustable reset delay timer allows timing configuration via an external capacitor connected to the device.
• High detection accuracy maintained at ±1% precision for reliable voltage monitoring.
• Automotive-grade construction ensures functional safety support and compliance with AEC-Q100 standards.

Applications

• Monitoring power supply voltages in automotive electronic control units
• Providing system reset signals for microcontrollers under low-voltage conditions
• Supervising battery voltage levels in vehicle electrical systems

Procurement Notes

Verify the specific suffix G-MTR against the official datasheet to confirm package type and tape-and-reel specifications. Confirm that the 4.2V threshold matches the target application requirements. Check current supply status as this series may be designated as not recommended for new designs. Ensure compatibility with existing PCB footprints for the 5-SSOP package before procurement.

Selection Notes

Select this component when a precise 4.2V threshold is required for automotive voltage supervision. The adjustable delay feature makes it suitable for applications needing customizable reset timing without internal programming. Consider the CMOS output drive capability and low current consumption for efficiency-sensitive designs. Verify that the operating voltage range covers the expected system supply variations.

Part Context

This part belongs to the BD53Exxx-M series of voltage detectors from Rohm Semiconductor. The series is characterized by high accuracy and low power consumption, specifically tailored for automotive environments. The BD53E42 variant provides a fixed 4.2V detection point, distinguishing it from other thresholds in the family while sharing the same adjustable delay and package architecture.

Replacement Considerations

BD5342G-2CGTR is listed as a manufacturer-recommended substitute with the same pinout and package. Verify that the replacement meets all functional safety and environmental requirements if used in critical automotive applications.